For participants without autoimmune or inflammatory disorders, odds ratios for PJP versus P. jirovecii-colonization were 3.048, 5.098 and 6.680 when proportion of CD8+ T cells in T cells > 40%, CD4+T/CD8+T < 1.4 or > 2.0, and had a history of treatment with glucocorticoids within 2 weeks. This evidence concerns the gene CD8A and pneumocystosis.